RESEARCH ARTICLE
Designing Foundations with Piles for Vibrating Machinery
M. Gohnert*, 1, I. Luker1, C. Morris2
Article Information
Identifiers and Pagination:
Year: 2008Volume: 2
First Page: 306
Last Page: 312
Publisher ID: TOBCTJ-2-306
DOI: 10.2174/1874836800802010306
Article History:
Received Date: 31/03/2008Revision Received Date: 30/10/2008
Acceptance Date: 31/10/2008
Electronic publication date: 31/12/2008
Collection year: 2008
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Abstract
CP 2012 is used extensively throughout the world to design machine foundations for vibrations. The code, however, does not give practical advice on how to design a foundation with piles. CP 2012 models the soil as a system of undamped individual springs. A pile group may similarly be modelled as a system of springs, determined from the geometric and material characteristics of the piles. The stiffness of a pile group is expressed in the same form as sub-grade reactions, permitting the use of the same dynamic equations given in CP 2012; thus, the code may be used for both cases— soil and piles. The theory described in this paper is based on structural stiffness theory. Several assumptions are therefore made concerning the soil characteristics, effective length and boundary conditions of the pile. The derivation of the equations are given and compared to a simple finite element model.